Google's PageRank (PR) is one of the factors that determines the order in which results are displayed after a search is carried out. If, for example, the word "Filipina" is Googled, a site's PR contributes to the position of the link to the site when the results are shown.

But how does PR work? The simplest explanation is that a link from page A to page B is interpreted as a vote by page A for page B (see "Our Search: Google Technology"). More links, more votes, higher PR. It is, of course, not that simple. If you'd like to see the original papers written by Google's founders, check out the following: